A211923 - cp's OEIS frontend

A211923 Number of (w,x,y,z) with all terms in {1,...,n} and 2wx>=3yz.

n	a(n)
0	0
1	0
2	5
3	31
4	96
5	238
6	504
7	921
8	1585
9	2560
10	3896
11	5698
12	8113
13	11165
14	15042
15	19860
16	25733
17	32814
18	41320
19	51271
20	63015
21	76686
22	92385
23	110397
24	131022
25	154298
26	180579
27	210119
28	243109
29	279810
30	320658
31	365615
32	415291
33	469881
34	529582
35	594834
36	666111
37	743335
38	827162

[0, 0, 5, 31, 96, 238, 504, 921, 1585, 2560, 3896, 5698, 8113, 11165, 15042, 19860, 25733, 32814, 41320, 51271, 63015, 76686, 92385, 110397, 131022, 154298, 180579, 210119, 243109, 279810, 320658, 365615, 415291, 469881, 529582, 594834, 666111, 743335, 827162]

cp's OEIS Frontend

A211923 Number of (w,x,y,z) with all terms in {1,...,n} and 2wx>=3yz.

Table of values

List of values

cp's OEIS Frontend

A211923 Number of (w,x,y,z) with all terms in {1,...,n} and 2*w*x>=3*y*z.

Table of values

List of values

A211923 Number of (w,x,y,z) with all terms in {1,...,n} and 2wx>=3yz.